Add missing dev dependency

mehaase · mehaase · commit c33945e07e4e · 2019-09-03T16:15:39.000-04:00
diff --git a/requirements.txt b/requirements.txt
@@ -2,6 +2,7 @@
 # needed if you only want to install this library.
 inflection
 mypy
+pytest
 sphinx
 sphinx-rtd-theme
 twine
